I owned a Tige about six years, and I still think it had the flatest, softest wakes ever. Good wakes most slow speeds. So from that point of view it is a great boat and you can't go wrong with it as a slalom puller.
As with any boat of this age, I would be really check over the structural integrity of the boat. My windshield was showing more separation every year and I was thinking it was bowing out, but could just be the natural settling of the boat.
That one looks in real good condition given the age.